javascript - Object.defineProperty vs vanilla property -

considering basic scenario of usage, do

foo.bar = 'baz';

and

object.defineproperty(foo, 'bar', {   value: 'baz',   configurable: true,   enumerable: true,   writable: true });

behave same in supported browsers?

can fall vanilla in pre-es6 applications because of favourable syntax or mix both of them without side effects?

yes, behave same when

however, if neither of given, 2 indeed produce different results.

defineproperty not consider inherited properties , descriptors
if existing (possibly inherited) property accessor, assignment try call setter (and fail if none exists), while definepropery overwrite property data descriptor (or fail if own, non-configurable one)
if existing inherited property data property, assignment fail if writable false, or create new own property if true, defineproperty does
if existing own property data property, assignment fail if writable false, or set new value if true, while defineownproperty fail iff configurable false , overwrite attributes otherwise.

considering basic scenario of usage

if "basic usage" mean no usage of fancy property attributes, yes equivalent. yet should use simple assignments, easier read , faster execute.

can fall vanilla in pre-es6 applications

notice full support of defineproperty comes es5, unless need consider pre-es5 (old ie) browsers wouldn't care @ all.

UV code